[IGSREPORT-441] ESA07087.SUM
J.
J.
Wed Aug 18 14:44:37 PDT 1993
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IGS Electronic Report 18-AUG-1993 14:44:37 Message Number 441
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From: J. Feltens
Subj: ESA07087.SUM
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ANALYSIS CENTRE: ESA/ESOC
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OUTLINE OF THE ESTIMATION OF GPS-ORBITS AND EARTH ROTATION PARAMETERS
AT THE ESOC PROCESSING CENTRE FOR IGS
J.M.Dow, J.Feltens, T.Martin-Mur, C.Garcia-Martinez
Description of analysis for period 1993 Aug 01 - Aug 07
(week 0708)
1. SOFTWARE USED: GPSOBS/BAHN-Version 5
2. MODELS USED AND PARAMETERS ESTIMATED/FIXED:
For a description of models and parameters used ==> see IGS - Mail 51
For updates of the models and parameters used ==> see IGS - Mail 114 and
see IGS - Rep. 224,277
3. REMARKS: SV-15/PRN15 has been manoeuvred on day 214 (2 Aug). We have esti-
mated an along track delta-v of +125 mm/sec at epoch 17:03:30 UTC
on 2 Aug. The manoeuvre also explains the bad orbit comparison
results in Table 5 for SV-15/PRN15 for days 214, 215 and 216,
since the manoeuvre caused large deviations between the orbits
being predicted from previous day and the corresponding estimated
orbits including the manoeuvre. Since we work with overlaps, the
manoeuvre had to be estimated on day 215 too, which also influ-
ences the orbit comparison on day 216.
4. GROUND STATIONS: Boucher and Altamimi, IGS workshop Berne 24-27 March'93
IGS/IERS station coordinates in the ITRF91 at 1992.6
___________________________________________________________
GPSweek|ALGO HART KOUR MATE RCM2 TROM YAR1 |f |e |t
0708___| FAIR KIRU MADR MCMU SANT USUD YELL |i |s |o
|DAY| GOLD KOKB MASP PAMA TIDB WETT |x.|t.|t.
---|---|------------------------------------------|--|--|--
|213| FFF FeF eFe -e- eFF FeF FF |12| 6|18
|214| FFF FeF eFe -e- eFF FeF FF |12| 6|18
|215| FFF FeF eFe eee eFF F-F FF |12| 7|19
|216| FFF FeF eFe ee- eFF F-F FF |12| 6|18
|217| FFF FeF eFe ee- eFF F-F FF |12| 6|18
|218| FFF FeF eFe ee- eFF FeF FF |12| 7|19
|219| FFF FeF -Fe ee- eFF FeF FF |12| 6|18
with: "F" ... coordinates of ground station kept fixed,
"e" ... coordinates of ground station estimated,
"-" ... ground station not included on that day.
5. ORBIT FIT MINUS EXTRAPOLATION FROM PREVIOUS DAY, RMS IN <METER>
\DAY| 213 214 215 216 217 218 219
\ |
\ |
SAT\|
----|-------------------------------------------
01 | 1.3 2.0 1.3 1.0 1.7 2.5 1.6
02 | 1.1 2.9 1.5 0.7 1.3 1.0 1.1
03 | 0.9 0.3 0.8 1.1 0.4 0.5 0.6
12 | 0.8 0.6 0.7 0.9 0.8 1.0 0.4
13 | 0.9 0.5 1.7 1.2 0.8 0.7 0.6
14 | 0.6 2.1 0.7 1.9 2.1 1.7 1.7
15 | 1.8 --- 38.2 18.2 0.9 1.8 1.6
16 | 1.6 1.6 2.2 1.3 1.1 2.0 1.1
17 | 2.5 3.0 2.4 1.4 1.4 2.0 1.4
18 | 0.8 1.1 0.7 1.1 1.4 0.8 0.9
19 | 1.3 0.6 1.0 1.3 1.1 0.5 0.9
20 | 2.6 1.8 3.2 4.0 2.3 3.6 2.9
21 | 3.2 0.7 1.7 1.0 1.0 2.5 1.2
22 | 1.0 1.0 1.8 1.7 1.3 2.3 1.2
23 | 2.0 1.3 0.9 0.8 0.8 1.6 1.6
24 | 2.0 1.3 2.8 1.7 1.2 0.6 0.9
25 | 1.1 2.0 1.1 2.0 2.2 0.7 2.2
26 | 2.5 2.0 2.4 1.1 1.4 2.6 3.4
27 | 1.0 1.3 0.7 1.7 1.1 0.6 0.8
28 | 0.6 0.7 1.1 2.3 1.0 1.6 1.7
29 | 1.3 0.6 0.8 1.2 1.7 0.5 0.8
31 | 1.0 0.9 1.0 1.7 0.8 1.9 1.7
07 | 1.1 1.7 3.2 1.0 1.3 1.4 1.3
09 | 1.1 0.7 0.8 1.2 0.9 0.8 0.5
6. PRODUCTS GENERATED:
The following products are generated and stored in CDDIS at NASA/GSFC:
ESA0708*.EPH - Precise GPS orbits, *=0 for Sunday,..., 6 for Saturday
ESA07087.ERP - Earth rotation results for week 0708 (including DUT1)
ESA07087.SUM - This summary file
End of Message
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